org.apache.poi.ss.usermodel.Drawing#createPicture ( )源码实例Demo

private void setImageValue(CellData cellData, Cell cell) {
    Sheet sheet = cell.getSheet();
    int index = sheet.getWorkbook().addPicture(cellData.getImageValue(), HSSFWorkbook.PICTURE_TYPE_PNG);
    Drawing drawing = sheet.getDrawingPatriarch();
    if (drawing == null) {
        drawing = sheet.createDrawingPatriarch();
    }
    CreationHelper helper = sheet.getWorkbook().getCreationHelper();
    ClientAnchor anchor = helper.createClientAnchor();
    anchor.setDx1(0);
    anchor.setDx2(0);
    anchor.setDy1(0);
    anchor.setDy2(0);
    anchor.setCol1(cell.getColumnIndex());
    anchor.setCol2(cell.getColumnIndex() + 1);
    anchor.setRow1(cell.getRowIndex());
    anchor.setRow2(cell.getRowIndex() + 1);
    anchor.setAnchorType(ClientAnchor.AnchorType.DONT_MOVE_AND_RESIZE);
    drawing.createPicture(anchor, index);
}
 

@Test
public void test2() throws IOException {
	 //create a new workbook
	XSSFWorkbook wb = new XSSFWorkbook(); //or new HSSFWorkbook();
    String imgPath = "D:\\Xiaoi\\logo\\logo.png";
    //add picture data to this workbook.
    InputStream is = new FileInputStream(imgPath);
    byte[] bytes = IOUtils.toByteArray(is);
    int pictureIdx = wb.addPicture(bytes, XSSFWorkbook.PICTURE_TYPE_PNG);
    is.close();

    CreationHelper helper = wb.getCreationHelper();

    //create sheet
    Sheet sheet = wb.createSheet();

    // Create the drawing patriarch.  This is the top level container for all shapes. 
    Drawing drawing = sheet.createDrawingPatriarch();

    //add a picture shape
    ClientAnchor anchor = helper.createClientAnchor();
    //set top-left corner of the picture,
    //subsequent call of Picture#resize() will operate relative to it
    anchor.setCol1(3);
    anchor.setRow1(2);
    anchor.setAnchorType(AnchorType.DONT_MOVE_AND_RESIZE);
    Picture pict = drawing.createPicture(anchor, pictureIdx);

    //auto-size picture relative to its top-left corner
    pict.resize();

    //save workbook
    String file = "E:\\ConvertTester\\excel\\picture.xls";
    if(wb instanceof XSSFWorkbook) file += "x";
    try (OutputStream fileOut = new FileOutputStream(file)) {
        wb.write(fileOut);
    }
}
 

private void setImage(Td td, Sheet sheet) {
    if (td.getFile() == null) {
        return;
    }
    try {
        if (createHelper == null) {
            createHelper = workbook.getCreationHelper();
        }
        byte[] bytes = Files.readAllBytes(td.getFile().toPath());
        String fileName = td.getFile().getName();
        int format;
        String suffix = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
        switch (suffix) {
            case "jpg":
            case "jpeg":
                format = Workbook.PICTURE_TYPE_JPEG;
                break;
            case "png":
                format = Workbook.PICTURE_TYPE_PNG;
                break;
            case "dib":
                format = Workbook.PICTURE_TYPE_DIB;
                break;
            case "emf":
                format = Workbook.PICTURE_TYPE_EMF;
                break;
            case "pict":
                format = Workbook.PICTURE_TYPE_PICT;
                break;
            case "wmf":
                format = Workbook.PICTURE_TYPE_WMF;
                break;
            default:
                throw new IllegalArgumentException("Invalid image type");
        }
        int pictureIdx = workbook.addPicture(bytes, format);
        Drawing drawing = sheet.createDrawingPatriarch();
        ClientAnchor anchor = createHelper.createClientAnchor();
        anchor.setCol1(td.getCol());
        anchor.setRow1(td.getRow());
        Picture pict = drawing.createPicture(anchor, pictureIdx);
        pict.resize(1, 1);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}
 

/**
 * 图片类型的Cell
 * 
 * @param patriarch
 * 
 * @param entity
 * @param row
 * @param i
 * @param string
 * @param obj
 * @param workbook
 * @throws Exception
 */
private static void createImageCell(Drawing patriarch,
		ExcelExportEntity entity, Row row, int i, String field,
		Object obj, Workbook workbook) throws Exception {
	if(StringUtils.isEmpty(field)){return;}
	row.setHeight((short) (50 * entity.getHeight()));
	row.createCell(i);
	ClientAnchor anchor = workbook instanceof HSSFWorkbook?
			new HSSFClientAnchor(0, 0, 0, 0, (short) i,
			row.getRowNum(), (short) (i + 1), row.getRowNum() + 1):
				new XSSFClientAnchor(0, 0, 0, 0, (short) i,
						row.getRowNum(), (short) (i + 1), row.getRowNum() + 1);
	if (entity.getExportImageType() == 1) {
		ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
		BufferedImage bufferImg;
		try {
			String path = ExcelExportOfTemplateUtil.class.getClassLoader()
					.getResource("") + field;
			path = path.replace("WEB-INF/classes/", "");
			path = path.replace("file:/", "");
			bufferImg = ImageIO.read(new File(path));
			ImageIO.write(
					bufferImg,
					field.substring(field.indexOf(".") + 1,
							field.length()), byteArrayOut);
			patriarch.createPicture(
					anchor,
					row.getSheet()
							.getWorkbook()
							.addPicture(byteArrayOut.toByteArray(),
									Workbook.PICTURE_TYPE_JPEG));
		} catch (IOException e) {
			e.printStackTrace();
		}
	} else {
		byte[] value = (byte[]) (entity.getGetMethods() != null ? getFieldBySomeMethod(
				entity.getGetMethods(), obj) : entity.getGetMethod()
				.invoke(obj, new Object[] {}));
		if (value != null) {
			patriarch.createPicture(anchor, row.getSheet().getWorkbook()
					.addPicture(value, Workbook.PICTURE_TYPE_JPEG));
		}
	}

}
 

/**
 * <p>
 * Process a CellImage from the images list and place the image on the sheet.
 * </p><p>
 * This involves changing the row height as necesssary and determining the column spread of the image.
 * </p>
 * @param cellImage
 * The image to be placed on the sheet.
 */
private void processCellImage( HandlerState state, Drawing drawing, CellImage cellImage ) {
	Coordinate location = cellImage.location;
	
	Cell cell = state.currentSheet.getRow( location.getRow() ).getCell( location.getCol() );

	IImageContent image = cellImage.image;		
	
	StyleManagerUtils smu = state.getSmu();
	float ptHeight = cell.getRow().getHeightInPoints();
	if( image.getHeight() != null ) {
		ptHeight = smu.fontSizeInPoints( image.getHeight().toString() );
	}

	// Get image width
	int endCol = cell.getColumnIndex();
       double lastColWidth = ClientAnchorConversions.widthUnits2Millimetres( (short)state.currentSheet.getColumnWidth( endCol ) )
       		+ 2.0;
       int dx = smu.anchorDxFromMM( lastColWidth, lastColWidth );
       double mmWidth = 0.0;
       if( smu.isAbsolute(image.getWidth())) {
           mmWidth = image.getWidth().convertTo(DimensionType.UNITS_MM);
       } else if(smu.isPixels(image.getWidth())) {
           mmWidth = ClientAnchorConversions.pixels2Millimetres( image.getWidth().getMeasure() );
       }
	// Allow image to span multiple columns
	CellRangeAddress mergedRegion = getMergedRegionBegunBy( state.currentSheet, location.getRow(), location.getCol() );
	if( (cellImage.spanColumns) || ( mergedRegion != null ) ) {
        log.debug( "Image size: ", image.getWidth(), " translates as mmWidth = ", mmWidth );
        if( mmWidth > 0) {
            double mmAccumulatedWidth = 0;
            int endColLimit = cellImage.spanColumns ? 256 : mergedRegion.getLastColumn();
            for( endCol = cell.getColumnIndex(); mmAccumulatedWidth < mmWidth && endCol < endColLimit; ++ endCol ) {
                lastColWidth = ClientAnchorConversions.widthUnits2Millimetres( (short)state.currentSheet.getColumnWidth( endCol ) )
                		+ 2.0;
                mmAccumulatedWidth += lastColWidth;
                log.debug( "lastColWidth = ", lastColWidth, "; mmAccumulatedWidth = ", mmAccumulatedWidth);
            }
            if( mmAccumulatedWidth > mmWidth ) {
                mmAccumulatedWidth -= lastColWidth;
                --endCol;
                double mmShort = mmWidth - mmAccumulatedWidth;
                dx = smu.anchorDxFromMM( mmShort, lastColWidth );
            }
        }
	} else {
		float widthRatio = (float)(mmWidth / lastColWidth);
		ptHeight = ptHeight / widthRatio;
	}

	int rowsSpanned = state.findRowsSpanned( cell.getRowIndex(), cell.getColumnIndex() );
	float neededRowHeightPoints = ptHeight;
	
	for( int i = 0; i < rowsSpanned; ++i ) {
		int rowIndex = cell.getRowIndex() + 1 + i;
		neededRowHeightPoints -= state.currentSheet.getRow(rowIndex).getHeightInPoints();
	}
	
	if( neededRowHeightPoints > cell.getRow().getHeightInPoints()) {
		cell.getRow().setHeightInPoints( neededRowHeightPoints );
	}
	
	// ClientAnchor anchor = wb.getCreationHelper().createClientAnchor();
	ClientAnchor anchor = state.getWb().getCreationHelper().createClientAnchor();
       anchor.setCol1(cell.getColumnIndex());
       anchor.setRow1(cell.getRowIndex());
       anchor.setCol2(endCol);
       anchor.setRow2(cell.getRowIndex() + rowsSpanned);
       anchor.setDx2(dx);
       anchor.setDy2( smu.anchorDyFromPoints( ptHeight, cell.getRow().getHeightInPoints() ) );
       anchor.setAnchorType(ClientAnchor.MOVE_DONT_RESIZE);
    drawing.createPicture(anchor, cellImage.imageIdx);
}